Kaku: Shikaku Logic Puzzle

About Kaku: Shikaku Logic Puzzle — Relaxing Grid Division with 2,000 Handcrafted Levels

Kaku: Shikaku Logic Puzzle is a relaxing logic puzzle rooted in the classic Shikaku rule set: divide a grid into rectangles so that every rectangle holds exactly one number, and that number matches the rectangle's cell count. The challenge scales from approachable introductory boards all the way to demanding Expert 13×13 grids, making the difficulty curve feel genuinely earned rather than arbitrary. An IQ score tracks your progress across every puzzle cleared, and a leaderboard lets you see how your reasoning stacks up. One scene shows a grid of dark grey rounded squares arranged in 7 rows and 6 columns.

With 2,000 handcrafted levels spread across 4 difficulty tiers and daily challenges that award monthly trophies, Kaku keeps the puzzle supply fresh well beyond a single sitting.

How to Play Kaku: Shikaku Logic Puzzle

The goal on every stage is to cover the entire board with rectangles, leaving no gaps and allowing no overlaps. Each rectangle must contain exactly one number, and that number must equal the total count of cells the rectangle covers. Fill every cell correctly to clear the stage.

Drawing and Removing Rectangles

• Drag across the board to draw a rectangle — hold the left mouse button or swipe with your finger.

Hints and Scoring

• When stuck, use a hint to reveal one correct rectangle.
• Your IQ score grows with every puzzle cleared, and clearing puzzles advances your position on the leaderboard.
• Daily challenges offer an additional puzzle each day, with monthly trophies awarded for consistent play.

Controls

• Left mouse button (hold and drag): Draw a rectangle on the grid
• Swipe (finger): Draw a rectangle on the grid
• Tap a placed rectangle: Remove it from the board

Games You Might Like

If the grid-clearing logic of Kaku appeals to you, Arrow Puzzle offers a similarly rule-driven board game where you remove arrows in the correct order to clear each grid, complete with daily challenges and helpful hints. For tile-matching logic on a flat board, Mahjong Lines tasks you with connecting identical tile pairs using paths of no more than three straight lines. Fans of spatial reasoning will also enjoy Arrow Exit Puzzle, a minimalist brain teaser where you clear every arrow from the grid by finding the right sequence of taps.

Browse the full Puzzle games collection on Playgama for more logic challenges, or explore the Arcade games category for a different kind of quick-play experience.